A. Do a head-to-toe exam looking for causes of “increased crying”, and, if negative and tolerates fluids by mouth, refer to his pediatrician.
B. Check the baby’s blood glucose, and if normal and eating in the ED, refer to his pediatrician.
C. After a thorough history and physical, if negative, refer to Failure to Thrive clinic
D. Draw blood for serum chemistry
In the meantime, a quote -- "In the presence of the patient, Latin is the language." -Medieval medical saying